Woodworking-machine.



I G. G. CHAPMAN. WOODWORKING MACHINE. APPLICATION FILED APR; '1, 190 48,655 Patented Apr. 20, 1 909.v

3 SHEETS-SH 3T 1.

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0;, 0. CHAPMAN. WOODWORKING MACHINE; APPLICATION PILED'APR. 1, 1908.

Patented :Apr. 20, 1909. v

I 3 SHEETS-SHEET 2.

U. G. CHAPMAN. WOODWORKING MACHINE. APPLICATION FILED APR. 1, 1908.

' 918x355. Patented Apr. 20, 1909.

3 SHEETSSHEET 3.

feedtable 7 having braekets 8 and 9 secured UNITE STATES PATENT oFrrcE.

" *oHRs'rrJR CHAPMAN, or some BEND, INDIANA, AssIeN'oR'T-o NA'IIONA-LWIRE BOUND BOX-O0, OF SOUTH BEND, INDIANA, A CORPORATION or'INDIANA.

.woonwoRKrNe-MAcrnNE.

Specification of Letters Patent.

Patented April 20', I909.

Applicationfiled April 1, 1908. Serial No. 424,559.

One object of the invention is to provide an automatically operatingtable adapted to throw the material into and out of operative relationwith the saw or other cutting mechanism.

'A still further object of the invention resides in the provision of afeed table provided with means -for automaticall clamping the materialupon the table for t e operation of the latter into and out of cooperative relation with the cutting mechanism.

With the above and other objects in View, the invention consists in thecombination and arrangement'of part's'hereinafter more fully described,illustrated in' the' accompanying. drawings and particularly pointed outin the appended claims, it bein under- 7 stood that changes may be madein t e form,

proportion, size and minor details without departing from the spirit orsacrificing any of the advantages of the invention. I Q

In the drawings :Figure 1 isanflend view of my invention. Fig. 2 is atop plan view.

Fi this a de-. tailed View of a strip of materia mitered in accordance'with my invention.

Fig. 3 is a front elevation.

Referring now more particularly to the accompanying drawings, thereference charac-r ter 1 lndlcates a suitable frame upon which is"mounted in any suitable'rnanne'r a rotatable shaft '2 to which thesawsor other cutting mechanism may be secured, the saws in the presentinstance being arranged for a step m1ter'ing action upon. the material,as indicated at 3. The shaft 2 is provided witha pulley wheel aroundwhich may work a. driv- ,ing belt'5 leading to' an suitable drivingmechanism not shown is osed overthe cutting-mechanism is a suitale'fender 6, as shown.

Slidably mounted upon the frame "1 is a thereto at one" edge for theslidable reception of the shanks 9( of the respective clamps 10 and 1,there being helical or other springs 12 between the under face of eachclamp 16 and 11 and the corresponding bracket designed to normally holdthe clamp 10 out of o erative relation with the material '13-upon t etable 7, it being understood that more than the one strip of materialshown may be placed upon the table for operation upon at one time. Eachshank of these clamps 10 and 11 carries a small roller 14 adapted tobear against the under edge of the corresponding cam-bars 15 and 16,each, each of the latter being reduced at its outer end to provide ashoulder 17. When the table 7 is in its inoperative position the rollers14: of the shanks of the clamps lie upon one side of the shoulders 17permitting the respective springs 12 to hold the clamps 10- and11 out ofoperative position. However, when the table 7 is thrown'to its operativeposition beneath the mitering elements 3 the rollers 14 of the shanks 9of the clamps ride upand over the shoulders 17 of the cambars 15 and 16causing the clamps 10 and 11 to be drawn downwardly toward the materialupon the table against the action of the springs 12 and clamp thematerial firmly upon the latter. In view of the 'fact that certain stris of one material may be of greaterthidlmess than the other material,the bars 15 and 16 are yieldably mounted upon the bolts 19-encircled bythe s rings 19, each bolt being mounted in a brac et 20 and having-ahead 21 between which latter and; the bracket the springs 19 aredisposed.

To reciprocate the feed table 7 backwardly. and forwardly into and outof operative relation with the mitering elements 3, Iprovide the table 7with depending lugs 22' to which is connected one end of a rod 23 havingconnection at 24 with the eccentric 25- mounted upon the drive shaft,26. To operate the shaft 26 and cause reciprocation of the table '7 byreason of the connecting element 23, the

shaft 26 is providedjwith a fpulley'27 fixedly secured upon the saidshe. 26 and driven through the instrumentality of a suitable belt 28having operative connection with any suitable driving means (not shown).

Mounted upon the shaft 26 is a positive clutch mechanism 29, which isthrown into and out of operation byv the raising and 'loweringof afoottreafdle. 30 which is mounted upon a lever 31 pivoted at 32 to theframe.

Pivotally secured to the inner end of the lever 31 is a link connection33 whose upper end is pivotally connected with the arm 34 5 table 7 isnot reci rocate d, and to hold the treadle '30 norrna ly in its upperposition there is provided a suitable spring 35. When the treadle 30 isdepressed against the action of the spring 35, the arm '34 is moved upon'10 its pivot 34 and operates the clutch 29 to effect afconnection ofthe pulley 27 to the shaft 26, whereby, upon operation of the belt 28,the table 7 with the material upon it, is reciprocated into and out ofcooperative relation with the mitering elements, as

clearly shown in dotted lines in Fig. 1, the r c procation of the table7 effecting an au- 7 tomatic clamping of the material upon the table,and it IS obvious that when the material is cut or mitered at the (point36 in Fig. 2

the cut strip or that the clam 10 will hol ot'her materia againstaccidental falling until removed by the operator of the machine.

' From the foregoingit will be seen that I .25 provide a positivefeeding of the material lnto and out of operative relation with themiterin or other cutting elements and that '1 provi e foran automaticclamping of the material as the table is reciprocated into andout ofoperative cutting position.

The len th of the material to be cut may be determined by the operatorand it is customary for the latter to feedthe material over the table byhand.

What is claimed is,

1. In a wood working machine, a frame having a pair of. lugs projectingtherefrom, each lug having an eye, a screw bolt passed through the 'eyeof each lug, a feed table,

40 means for reciprocating the feed table, a

yieldably mounted clamp arranged to clamp the material upon the table,said clamp. including a shank, a roller carried by the shank, and acambar secured to said screw bolts and arranged for engagement by said.roller-to raise and lower said' clamp alternatelg when the'table isreciprocated;

v 2.; n awood working machine, a frame hav ng lugs projecting therefrom,screw range bolts working through said lugs, a feed table, a cuttinmeans, means for reciprocating the feed tab e toward and away from thecutting means, a pair of clamps yieldably mounted upon the table oneupon each side of the line 0 cut of the cutting means, one clam to holdthe severed end of the material am the other clamp to hold thebalance ofthe material whereby neither piece of material may accidentally movefrom the table after the cntting operation, each clamp including ashank, a roller carried by each shank, and a cam-bar cooperating witheach clam and provided with a shoulder on its underside for engagementby the roller of the corresponding clamp whereby the clamps may beraised and lowered upon the'table when the latter is reciprocated.

3. 111 a wood working machine, a frame, a pair of brackets mounted uponthe frame, each bracket having an opening, a feed table, a cuttingmeans, means for reciprocating the feed table toward and away from thecut ting means, a pair of clamps each including a head and a shank, theshank of each clamp being slid'ably mounted in the opening of one ofsaid brackets,'a spring secured to each bracket adjacent the opening inthe latter and having engagement with the head of the corres ondingclamp, the clam s being arwhereby one clam severed end of the materiaand the other clamp will hold'the balance of the material 'to preventaccidental movement ofthe ma;

terial from the table during the cutting operation, a roller secured .tothe shank of each will hold the .85 clamp, and apair of yieldably andadjust--

